seat: implementation

src/seat/keyboard.rs

@@ -113,7 +113,13 @@ impl KbdInternal {
         };
 
         // update state
-        let state_components = self.state.update_key(keycode, direction);
+        // Offset the keycode by 8, as the evdev XKB rules reflect X's
+        // broken keycode system, which starts at 8.
+        let state_components = self.state.update_key(keycode + 8, direction);
+
+        println!("KEYCODE: {}", keycode);
+        println!("MODS: {:b}", state_components);
+
         if state_components != 0 {
             self.mods_state.update_with(&self.state);
             true
@@ -156,6 +162,7 @@ impl KbdInternal {
 }
 
 /// Errors that can be encountered when creating a keyboard handler
+#[derive(Debug)]
 pub enum Error {
     /// libxkbcommon could not load the specified keymap
     BadKeymap,
@@ -164,14 +171,12 @@ pub enum Error {
 }
 
 /// Create a keyboard handler from a set of RMLVO rules
-pub fn create_keyboard_handler<L>(rules: &str, model: &str, layout: &str, variant: &str,
-                                  options: Option<String>, repeat_delay: i32, repeat_rate: i32, logger: L)
-                                  -> Result<KbdHandle, Error>
-where
-    L: Into<Option<::slog::Logger>>,
-{
-    let log = ::slog_or_stdlog(logger).new(o!("smithay_module" => "xkbcommon_handler"));
-    info!(log, "Initializing a xkbcommon handler with keymap";
+pub(crate) fn create_keyboard_handler(rules: &str, model: &str, layout: &str, variant: &str,
+                                      options: Option<String>, repeat_delay: i32, repeat_rate: i32,
+                                      logger: ::slog::Logger)
+                                      -> Result<KbdHandle, Error> {
+    let log = logger.new(o!("smithay_module" => "xkbcommon_handler"));
+    info!(log, "Initializing a xkbcommon handler with keymap query";
         "rules" => rules, "model" => model, "layout" => layout, "variant" => variant,
         "options" => &options
     );
@@ -188,6 +193,8 @@ where
         Error::BadKeymap
     })?;
 
+    info!(log, "Loaded Keymap"; "name" => internal.keymap.layouts().next());
+
 
     // prepare a tempfile with the keymap, to send it to clients
     let mut keymap_file = tempfile().map_err(Error::IoError)?;
@@ -255,10 +262,11 @@ impl KbdHandle {
     {
         trace!(self.arc.logger, "Handling keystroke"; "keycode" => keycode, "state" => format_args!("{:?}", state));
         let mut guard = self.arc.internal.lock().unwrap();
-        let mods_changed = guard.key_input(keycode, state);
 
         let sym = guard.state.key_get_one_sym(keycode);
 
+        let mods_changed = guard.key_input(keycode, state);
+
         trace!(self.arc.logger, "Calling input filter";
             "mods_state" => format_args!("{:?}", guard.mods_state), "sym" => xkb::keysym_get_name(sym)
         );
@@ -294,18 +302,26 @@ impl KbdHandle {
 
     /// Set the current focus of this keyboard
     ///
-    /// Any previous focus will be sent a `wl_keyboard::leave` event, and if the new focus
-    /// is not `None`, a `wl_keyboard::enter` event will be sent.
-    pub fn set_focus(&self, focus: Option<wl_surface::WlSurface>, serial: u32) {
+    /// If the ne focus is different from the previous one, any previous focus
+    /// will be sent a `wl_keyboard::leave` event, and if the new focus is not `None`,
+    /// a `wl_keyboard::enter` event will be sent.
+    pub fn set_focus(&self, focus: Option<&wl_surface::WlSurface>, serial: u32) {
         let mut guard = self.arc.internal.lock().unwrap();
 
+        let same = guard
+            .focus
+            .as_ref()
+            .and_then(|f| focus.map(|s| s.equals(f)))
+            .unwrap_or(false);
+
+        if !same {
             // unset old focus
             guard.with_focused_kbds(|kbd, s| {
                 kbd.leave(serial, s);
             });
 
             // set new focus
-        guard.focus = focus;
+            guard.focus = focus.and_then(|s| s.clone());
             let (dep, la, lo, gr) = guard.serialize_modifiers();
             let keys = guard.serialize_pressed_keys();
             guard.with_focused_kbds(|kbd, s| {
@@ -317,6 +333,9 @@ impl KbdHandle {
             } else {
                 trace!(self.arc.logger, "Focus unset");
             }
+        } else {
+            trace!(self.arc.logger, "Focus unchanged");
+        }
     }
 
     /// Register a new keyboard to this handler
@@ -324,7 +343,7 @@ impl KbdHandle {
     /// The keymap will automatically be sent to it
     ///
     /// This should be done first, before anything else is done with this keyboard.
-    pub fn new_kbd(&self, kbd: wl_keyboard::WlKeyboard) {
+    pub(crate) fn new_kbd(&self, kbd: wl_keyboard::WlKeyboard) {
         trace!(self.arc.logger, "Sending keymap to client");
         kbd.keymap(
             wl_keyboard::KeymapFormat::XkbV1,
@@ -351,7 +370,7 @@ impl KbdHandle {
     /// Performs an internal cleanup of known kbds
     ///
     /// Drops any wl_keyboard that is no longer alive
-    pub fn cleanup_old_kbds(&self) {
+    pub(crate) fn cleanup_old_kbds(&self) {
         let mut guard = self.arc.internal.lock().unwrap();
         guard
             .known_kbds

src/seat/mod.rs

@@ -1,3 +1,123 @@
 mod keyboard;
+mod pointer;
 
-pub use self::keyboard::{create_keyboard_handler, Error as KbdError, KbdHandle};
+pub use self::keyboard::{Error as KbdError, KbdHandle};
+pub use self::pointer::PointerHandle;
+use wayland_server::{Client, EventLoop, EventLoopHandle, Global, StateToken};
+use wayland_server::protocol::{wl_keyboard, wl_pointer, wl_seat};
+
+pub struct Seat {
+    log: ::slog::Logger,
+    name: String,
+    pointer: Option<PointerHandle>,
+    keyboard: Option<KbdHandle>,
+    known_seats: Vec<wl_seat::WlSeat>,
+}
+
+impl Seat {
+    pub fn new<L>(evl: &mut EventLoop, name: String, logger: L)
+                  -> (StateToken<Seat>, Global<wl_seat::WlSeat, StateToken<Seat>>)
+    where
+        L: Into<Option<::slog::Logger>>,
+    {
+        let log = ::slog_or_stdlog(logger);
+        let seat = Seat {
+            log: log.new(o!("smithay_module" => "seat_handler")),
+            name: name,
+            pointer: None,
+            keyboard: None,
+            known_seats: Vec::new(),
+        };
+        let token = evl.state().insert(seat);
+        // TODO: support version 5 (axis)
+        let global = evl.register_global(4, seat_global_bind, token.clone());
+        (token, global)
+    }
+
+    pub fn add_pointer(&mut self) -> PointerHandle {
+        let pointer = self::pointer::create_pointer_handler();
+        self.pointer = Some(pointer.clone());
+        let caps = self.compute_caps();
+        for seat in &self.known_seats {
+            seat.capabilities(caps);
+        }
+        pointer
+    }
+
+    pub fn add_keyboard(&mut self, model: &str, layout: &str, variant: &str, options: Option<String>,
+                        repeat_delay: i32, repeat_rate: i32)
+                        -> Result<KbdHandle, KbdError> {
+        let keyboard = self::keyboard::create_keyboard_handler(
+            "evdev", // we need this one
+            model,
+            layout,
+            variant,
+            options,
+            repeat_delay,
+            repeat_rate,
+            self.log.clone(),
+        )?;
+        self.keyboard = Some(keyboard.clone());
+        let caps = self.compute_caps();
+        for seat in &self.known_seats {
+            seat.capabilities(caps);
+        }
+        Ok(keyboard)
+    }
+
+    fn compute_caps(&self) -> wl_seat::Capability {
+        let mut caps = wl_seat::Capability::empty();
+        if self.pointer.is_some() {
+            caps |= wl_seat::Pointer;
+        }
+        if self.keyboard.is_some() {
+            caps |= wl_seat::Keyboard;
+        }
+        caps
+    }
+}
+
+fn seat_global_bind(evlh: &mut EventLoopHandle, token: &mut StateToken<Seat>, _: &Client,
+                    seat: wl_seat::WlSeat) {
+    evlh.register(&seat, seat_implementation(), token.clone(), None);
+    let mut seat_mgr = evlh.state().get_mut(token);
+    seat.name(seat_mgr.name.clone());
+    seat.capabilities(seat_mgr.compute_caps());
+    seat_mgr.known_seats.push(seat);
+}
+
+fn seat_implementation() -> wl_seat::Implementation<StateToken<Seat>> {
+    wl_seat::Implementation {
+        get_pointer: |evlh, token, _, seat, pointer| {
+            evlh.register(&pointer, pointer_implementation(), (), None);
+            if let Some(ref ptr_handle) = evlh.state().get(token).pointer {
+                ptr_handle.new_pointer(pointer);
+            }
+            // TODO: protocol error ?
+        },
+        get_keyboard: |evlh, token, _, seat, keyboard| {
+            evlh.register(&keyboard, keyboard_implementation(), (), None);
+            if let Some(ref kbd_handle) = evlh.state().get(token).keyboard {
+                kbd_handle.new_kbd(keyboard);
+            }
+            // TODO: protocol error ?
+        },
+        get_touch: |evlh, token, _, seat, touch| {
+            // TODO
+        },
+        release: |_, _, _, _| {},
+    }
+}
+
+fn pointer_implementation() -> wl_pointer::Implementation<()> {
+    wl_pointer::Implementation {
+        set_cursor: |_, _, _, _, _, _, _, _| {},
+        release: |_, _, _, _| {},
+    }
+}
+
+fn keyboard_implementation() -> wl_keyboard::Implementation<()> {
+    wl_keyboard::Implementation {
+        release: |_, _, _, _| {},
+    }
+}

src/seat/pointer.rs

@@ -0,0 +1,100 @@
+use std::sync::{Arc, Mutex};
+use wayland_server::{Liveness, Resource};
+use wayland_server::protocol::{wl_pointer, wl_surface};
+
+// TODO: handle pointer surface role
+
+struct PointerInternal {
+    known_pointers: Vec<wl_pointer::WlPointer>,
+    focus: Option<wl_surface::WlSurface>,
+}
+
+impl PointerInternal {
+    fn new() -> PointerInternal {
+        PointerInternal {
+            known_pointers: Vec::new(),
+            focus: None,
+        }
+    }
+
+    fn with_focused_pointers<F>(&self, mut f: F)
+    where
+        F: FnMut(&wl_pointer::WlPointer, &wl_surface::WlSurface),
+    {
+        if let Some(ref focus) = self.focus {
+            for ptr in &self.known_pointers {
+                if ptr.same_client_as(focus) {
+                    f(ptr, focus)
+                }
+            }
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct PointerHandle {
+    inner: Arc<Mutex<PointerInternal>>,
+}
+
+impl PointerHandle {
+    pub(crate) fn new_pointer(&self, pointer: wl_pointer::WlPointer) {
+        let mut guard = self.inner.lock().unwrap();
+        guard.known_pointers.push(pointer);
+    }
+
+    pub fn motion(&self, location: Option<(&wl_surface::WlSurface, f64, f64)>, serial: u32, time: u32) {
+        let mut guard = self.inner.lock().unwrap();
+        // do we leave a surface ?
+        let mut leave = true;
+        if let Some(ref focus) = guard.focus {
+            if let Some((ref surface, _, _)) = location {
+                if focus.equals(surface) {
+                    leave = false;
+                }
+            }
+        }
+        if leave {
+            guard.with_focused_pointers(|pointer, surface| {
+                pointer.leave(serial, surface);
+            });
+            guard.focus = None;
+        }
+
+        // do we enter one ?
+        if let Some((surface, x, y)) = location {
+            if guard.focus.is_none() {
+                guard.focus = surface.clone();
+                guard.with_focused_pointers(|pointer, surface| {
+                    pointer.enter(serial, surface, x, y);
+                })
+            } else {
+                // we were on top of a surface and remained on it
+                guard.with_focused_pointers(|pointer, surface| {
+                    pointer.motion(time, x, y);
+                })
+            }
+        }
+    }
+
+    pub fn button(&self, button: u32, state: wl_pointer::ButtonState, serial: u32, time: u32) {
+        let mut guard = self.inner.lock().unwrap();
+        guard.with_focused_pointers(|pointer, _| {
+            pointer.button(serial, time, button, state);
+        })
+    }
+
+    // TODO: handle axis
+
+    pub(crate) fn cleanup_old_pointers(&self) {
+        let mut guard = self.inner.lock().unwrap();
+        guard
+            .known_pointers
+            .retain(|p| p.status() != Liveness::Dead);
+    }
+}
+
+pub(crate) fn create_pointer_handler() -> PointerHandle {
+    PointerHandle {
+        inner: Arc::new(Mutex::new(PointerInternal::new())),
+    }
+}